Indicators

The majority of indicator stalks are mounted on the side of the steering
column so you can easily operate them without having to release your grip on
the steering wheel. Most modern stalks also have a self-cancelling device that
is operated by the moving part of the steering column. This automatically
switches the indicators off after you have turned into a bend.
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There are two basic types of flasher unit. One is operated by a piece of wire or a bimetallic strip which expands and contracts as it is heated by the current; the other is a relay operated by a transistorised circuit.
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